Grain and feed grinder.



PATENTED MAY 2, 1905.

H. B. JONES. GRAIN AND FEED GRINDER.

AIPLIOATION FILED AUG. 11, 1904.

v aw newts? 12KB. ]5@@@95 I aktomwg NrTE STATES Patented May 2, 1905.

GRAIN AND FEED GRINDER.

SPECIFICATION forming part of Letters Patent No. 789,033, dated May 2,1905.

Application filed August 11, 1904. Serial No. 220,414.

To Ml whom it may concern/.-

Be it known that I, HARRY B. JONES, a citizen of the United States,residing at Reardan, in the county of Lincoln and State of Washington,have invented certain new and useful Improvements in Grain and FeedGrinders; and I do declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

My invention relates to feed and grain grinders; and the objects of thesame are to provide a simple inexpensive structure for grinding allkinds of grain and feed and which will be provided with improved meansfor feeding the material to be ground from the hopper to thegrinding-cones and which shall be provided with means for connection toa motor or other power or which may be driven by hand. These and otherobjects are attained by means of the construction illustrated in theaccompanying drawings, in which Figure 1 is a vertical section takencentrally through a machine made in accordance with my invention. Fig. 2is a detail section of the grinding-cones.

The numeral 1 designates a suitable stand or support having legs 2 and abase or table portion 3. Supported centrally upon the table 3 is ahollow shell 4, secured by bolts 5 to the table and having a flaringupper end 6, which forms a feed-opening to the grindingcones.

7 is a feed-hopper into which the material is to be placed, and 8 arethe supports for said hopper lying over the flaring portion 6 andengaging the hopper 7 at a suitable point above. WVithin the shell 4 isa stationary grinding-cone 9. A shaft 10, journaled in a cross-bar 11 atthe top and in a cross-bar 12 below, has secured to it the solidconicalsupport 13 for the hollow movable grinding-cone 14, which isseated upon and conforms substantiall y to the contour of said solidcone 13. Above the cone 13 is a feeder 15, also mounted upon the shaftimmediately above the cone 13, said feeder 15 being provided with aseries of spiral grooves 16, designed to feed the material gradually anddistribute it equally around the cone 13 in order that all portions ofthe cone shall be subjected to substantially the same amount of work andto equalize the strain upon said cone. To hold the feeder 15 and therevolving cone in place, a nut 17 is placed upon the upper end of theshaft 10, and this nut is covered by a cap 18, secured upon a cross-bar11, extending from one side to the other of the flaring portion 6. Thesolid cone-support 13 is recessed centrally, as at 20, and provided witha stop or nut 21, upon which the cone-support l3 rests.

A discharge-chute 21 extends out from one side of the framework, and inorder to keep the ground material from coming in contact with the shaft10, which passes through the chute 21, a shield or guard 22 surroundsthe shaft 10 and is seated upon the chute 21 To adjust the revolvingcone relatively to the outer or stationary cone, the shaft 10 may passthrough a cross-bar 23, hinged at 24 to the frame and connected at 25 tothe shaft 10. At the opposite end of the cross-bar 23 from the hingedconnection 24 an adjusting-screw 26 is provided, said screw passingthrough the cross-bar 23 and being supported above in a bracket 27.

28 is a hand-wheel on the end of the adjusting-screw 26, Which isemployed for the purpose of raising the end of the cross-bar 23, andthus adjusting the inner cone vertically within the outer shell toregulate the fineness or coarseness of the material to be ground. Theinner cone may be driven by means of a bevel-gear 29 on the shaft 10,said bevel-gear being in mesh with a gear 30 on a shaft 31, extendingoutward and journaled in the frame. The shaft 31 may be provided with ahandcrank 32 and a pulley 33. If it is desired to operate the machine bypower, a belt passing from the pulley 33 may extend through thedriving-shaft to the motor, or the crank 32 may be used for operatingthe machine by hand.

From the foregoing it will be obvious that my grinder is ofcomparatively simple construction, can be easily taken apart andreassembled when repairs are necessary, and that as a whole the deviceis simple in construction and efficient for its use.

Having thus described my invention, what IQ disposed feeding-groovesextending from top to bottom of said feeder, substantially as described.I

In testimony whereof I have hereunto set my hand in presence of twosubscribing Witnesses.

HARRY B. JONES,

Witnesses:

J. E. FRASER. E. N. INNEs.

